Wikipedia is a marvelous tool. It allows quick and easy access to knowledge spanning the breadth of the world and the murky depths of history. There are versions of Wikipedia in scores of languages, even dead languages such as Latin and Old English. While the results given by the “Random Article” button can give the impression that a large proportion of articles are on obscure athletes or villages, the far more important value of Wikipedia comes in its broader articles. Taken together, they can provide an introductory source for most topics of interest – just don’t forget to find deeper sources when you need them!